My male and female kribs have been together for about a week now, they have started doing little shakes for eachother, and now they are building up stones in front of the entrance to their cave. The male spends the most time outside of the cave, chasing away other fish that come too close and the female occasionally comes out, but no where near as often as the male, and never for longer than a few seconds. I was wondering if this behaviour indicates that they have spawned, or if there are any other behaviours that indicate that they may have?